Core-supporting frame.



PATENTEDOGT. 8, 1907.

' M. D. WALDRON.

-' GORE SUPPORTING FRAME.

APPLIGATIOH nnnn APR. 26, 1906.

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MICHAEL D. WA LDRON, OF U'lICA, NEW YORK, ASSIGNOR OF TWO-THIR-DS TO UTICA HEATER COMPANY, OF UTIGA, NEW YORK.

CORE-SUPFORTING- FRAME.

Specification of Letters Patent.

Patented Oct. 8, 1907.

Application filed April 26, 1906. erial No. 313,761.

To all whom it may concern:

Be it known that I, MICHAEL D. WALDRON, a resident of Utica, in the county of Oneida and State of New York, have invented certain new and useful Improvements in Core-Supporting Frames; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form part of this specification.

The object of my invention is to provide a combina tion core supporting frame for foundry use, wherebygreen sand cores may be used and vented where baked cores have been heretofore used.

Figure 1 shows a sectional view of a portion of a pattern and its holding frame, with portions of my core supporting frame in position therein. Fig. 2 shows on an enlarged scale from Fig. 1 a partial vertical section of a mold ready for casting, having a core with my sectional core supporting frame in use therein. This section is taken on line X-Y of Fig. 3. Fig. 3 is a planview of a pattern, with its temporary holding frame and portions of my core supporting frame erected therein. Fig. 4 is an enlarged view showing parts of my core supporting frame assembled in their relative working positions.

Referring to the reference letters and figures in a more particular description, 1 indicates the post part of the core frame, 2 a tubular supporting and venting part, 3 a sectional supporting bar and 4 a grate-like plate part, the said four parts being adapted to be assembled in the position shown in Fig. 4.

The construction as shown is arranged particularly for casting furnace radiators, and is brought into use in the following manner:

5 indicates one part of the radiator pattern, which is adapted to be temporarily supported in a frame 6 in what may be termed the inverted position shown in Fig. 1. The part of the frame work consisting of the post 1, the tubular bar 2 and the sectional bar 3 is then placed in position in the pattern,.as shown in Fig. 1. The lower ends of the post part 1 are preferably adapted to rest on a small block 7 provided in the bottom of the pattern as shown in Fig. 1. When in circular form asufiicient number of post parts 1 are provided to provide the supports at sufficiently frequent intervals, and the tubular bar 2 will preferably be provided in sections which may be coupled within the post part, the same acting as a slip coupling, or they may be coupled as indicated at 8 by a slip coupling slipped on to the meeting ends of the part 2. The bars 3 are in sections of sufficient length to reach from one post 1 to the next, and are engaged in the respective post parts. When the parts 1, 2 and 3 have been placed in position as shown in Fig. 1 and more or less in Fig. 3, the lower portion of the pattern is rammed full of sand in the usual manner and the same is continued nearly to the top. Before filling completely with sand, however, the grate-like plates 4 are placed in position on the upper end, as shown in Fig. 1, of the post pieces 1. The filling of sand is then completed and the whole rammed down into a comparatively solid mass.

The tubular portion 2, which occupies a central position in the sand core, which is generally represented by the reference number 10, is provided with numerous perforations to receive gases from the core and provide a vent therefor. The sand core 10 when partially completed may be pricked full of holes extending to the tube 4, in order to facilitate the escape of gas towards this vent tube. When the sand core 10 is completed, it will completely inclose the core frame, except at one slight point indicated at 11 against which the chaplet is adapted to bear.

In casting furnace radiators, the sand core 1.0 will constitute a portion of the middleflask part B and when in casting position will occupy the relation to the other parts shown in Fig. 2. When the core 10 is removed from the mold or pattern in which it is formed, as shown in Fig. 1, the block 7 remains in the mold and there is substituted therefor in the core a small insert baked core 12, which constitutes in fact a small section of the core 10. When in position in the complete mold or flask, the core 10 will be supported from beneath by a chaplet 14 and a wedge 15 between the end of the chaplet and the frame of the lower flask section, and the core 10 will be supported from above by a chaplet 16 and a wedge 17 between the end of the-chaplet and the frame bars of the upper flask section A. The chaplet 16 will rest on the insert baked core piece 12 as affording a better bearing.

The casting is made by running the molten metal into the space as previously occupied by the pattern, and after the casting is made the sand core 10 will break up and the core frame, consisting of the parts before mentioned, fall apart in such a way that they can be removed through a comparatively small opening into the interior of the casting and the frame parts may be again assembled and again used. When casting furnace radiators of the general form of construction shown in the drawing, a passage for the escape of gases from the vent tube 2 may be provided through the medium of the inwardly extending pipe 2 and a hole 2 in the sand, the latter being provided by a plug inserted in the sand before filling the mold and ramming up.

What I claim as new and desire to secure by Letters Patentis:

1. A core supporting frame-work adapted to become embedded in the core consisting of post parts, a sectional the post parts and grate-like supporting and venting pipe passing part, connecting sectional supporting through the post bar engaging with plates applied to the post parts, substantially as set forth.

2. A sectional core supporting frame consisting of a set of post parts, set of sectional perforate tube parts,, set of sectional supporting bar parts and set of plate parts adapted to be assembled and set up with the tube bar and plate parts in a circular form and the post parts extending transversely and engaging with the other three sets of parts, substantially as set forth.

The combination in a core support for circular cores sectional detachable encircling parts, post parts with which the encircling parts engage, spacing and supporting said encircling parts and readily detachable therefrom, substantially as set forth.

In witness whereof, I have allixed my signature. in presence of two witnesses, this 20th day 01'. April 1906 MICHAEL D. WALDIION.

Witnesses CARL G. CUNNINGHAM, SARAH E. CLARK. 

